scholarly journals Determination of heavy metals (Pb and Cd) in guava pulps (psidium guajava) obtained in the city of Cartagena

2019 ◽  
Vol 17 (2) ◽  
pp. 137
Author(s):  
Diana Gómez-Marrugo ◽  
Glicerio León-Méndez ◽  
Jorge Puello-Silva ◽  
Miladys Torrenegra-Alarcon ◽  
Deisy León-Méndez ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Psidium Guajava ◽  
The City

 El objetivo de este estudio fue determinar los niveles de acumulación de metales pesados como el cadmio (Cd) y el plomo (Pb) derivados de actividades antropogénicas, como los humos metálicos de la soldadura y el tráfico de vehículos, en la pulpa de guayaba (Psidium guajava) en la ciudad de Cartagena. -Bolívar. Las muestras se dividieron en tres (3) grupos según la proximidad de las fuentes de contaminación. En el grupo 1, menos de 100 m de industrias metalúrgicas, las concentraciones de Cd en el rango de 0.0400 ± 0.33 mg / Kg y 0.0483 ± 0.15 mg / Kg, mientras que los valores de Pb oscilaron entre 0.036 ± 0.22 mg / kg y 0.060 ± 0.01 mg / kg . Para el grupo 2, se tomaron muestras en 3 lugares donde no se identificó claramente ninguna fuente de contaminación, lo que resultó en concentraciones de Cd 0.0215 ± 0.05 mg / Kg y 0.0260 ± 0.10 mg / Kg, mientras que para el Pb solo se encontró en una de las muestras cuyo valor fue 0.035 ± 0.15 mg / Kg. Finalmente, para el grupo 3, se tomaron muestras en 2 ubicaciones ubicadas a menos de 100 m de avenidas de alto tráfico, resultando en valores muy similares para Cd (0.0220 ± 0.13 mg / Kg y 0.0311 ± 0. 22 mg / Kg), mientras que para Pb el los valores fueron muy precisos (0.032 ± 0.35 mg / Kg y 0.029 ± 0.20 mg / Kg). Estas mediciones muestran cómo, en sitios cercanos a las actividades humanas, las concentraciones de estos metales pesados están en niveles más altos, lo que representa un peligro para su consumo debido a la bioacumulación en diferentes tejidos humanos.Palabras clave: metales pesados, humo metálico, contaminación, tráfico vehicular.

scholarly journals Monitoring of technogenic soil pollution in manufacture

2021 ◽  
Author(s):  
B.E. Gubasheva ◽  
M.A. Khassenova ◽  
E.K. Akkereyeva
Keyword(s):  
Heavy Metals ◽  
Soil Cover ◽  
Humus Content ◽  
Gas Processing ◽  
Mobile Forms ◽  
West Kazakhstan ◽  
A Chain ◽  
Ph Level ◽  
The City

The growth of production zones in the city of Aksai in the West Kazakhstan region leads to contamination of the soil cover, which, in turn, causes a chain reaction of pollution. Due to soil contamination, soil moisture and the underground surface are polluted. As a result, the processes in the soil change, the vital activity of plants, animals and microorganisms are disrupted. The article presents data on the study of changes in soil cover under the influence of human activity. The results of the conducted studies on the determination of the humus content and pH level, the content of heavy metals in technogenically disturbed soils in the adjacent territory of the natural gas processing enterprise are presented. The obtained data on the gross content and mobile forms of heavy metals indicates that the maximum permissible concentration level for these pollutants is not exceeded.

scholarly journals Consideration of snowpack stratification in the analysis of spatial distribution of pollutants accumulated in snow (Yuzhno-Sakhalinsk)

2020 ◽  
Author(s):  
М.В. Михалев ◽  
В.А. Лобкина
Keyword(s):  
Heavy Metals ◽  
Spatial Distribution ◽  
Dust Pollution ◽  
The City

Приведены результаты исследований снежного покрова Южно-Сахалинска, проведенных в зимние сезоны 2018/19 и 2019/20 гг. для оценки пылевого загрязнения территории города, а также выявления пространственного распределения ионов Cl-, , Са2+, Na+ и тяжелых металлов Pb и Zn. Особенностью исследования является определение влияния стратификации снежного покрова на величины депонированных в нем загрязнителей. The paper presents the results of a snowpack research on the territory of Yuzhno-Sakhalinsk, carried out in winter seasons of 2018–2019 and 2019–2020 to determine the amount of dust pollution accumulated in the snow of the city, as well as determine the spatial distribution of Cl-, , Са2+, Na+ and heavy metals Pb and Zn. A peculiarity of the research is the determination of the effect of snowpack stratification on the amounts of contaminants deposited in that snowpack.

scholarly journals Determination of the Level of Snow Cover Pollution with Heavy Metals within the City of Kovrov Boundaries

2014 ◽  
pp. 69-76
Author(s):  
Keyword(s):  
Heavy Metals ◽  
Snow Cover ◽  
Chemical Elements ◽  
Iron Accumulation ◽  
Winter Period ◽  
Vladimir Oblast ◽  
The City

The paper presents the outcomes of the investigation of heavy metals and iron accumulation in the Kovrov (Vladimir Oblast) snow cover. On the basis of snowmelt waters’ analysis a calculation of the chemical elements input into snow cover over the winter period has been carried out.

scholarly journals DETERMINATION OF SOIL QUALITY IN MAYKOP BASED ON THE CONTENT ANALYSIS OF SOIL ALGAE AND CYANOBACTERIA

2017 ◽  
Vol 14 ◽  
pp. 128-135
Author(s):  
Emiliya A. Sirotiuk ◽  
Saida R. Zhemadukova
Keyword(s):  
Heavy Metals ◽  
Soil Contamination ◽  
Soil Quality ◽  
Oil Products ◽  
City Center ◽  
Key Indicator ◽  
City District ◽  
Destructive Processes ◽  
The City

The paper presents the results of the study on soil quality in Maykop using algae indication. The findings suggest soil contamination by heavy metals and oil products, and the beginning of destructive processes. The city center is recognized to be the most unfavorable ecological area of the city. There are no diatoms in soil cyanoalgological sinusiae ‒ a key indicator of oil contamination of soils. On the contrary, cyanobacteria prevail, which are resistant to soil contamination with oil products and heavy metals. One of the main environmental problems in Maykop is soil contamination with heavy metals and oil products. The main contributor to soil contamination is city transport and housing and public services. Pollutants enter soil through precipitation and leaf and branch shedding, deposit from the air, and are directly absorbed by moist soil. The results of algological studies suggest that destructive processes have begun in the soils in Maykop. This is evidenced by the composition of soil cyanoalgological sinusiae and by the population of main groups of microphototrophs. The most ecologically disadvantaged city district is «Central Market».

scholarly journals Accumulation of heavy metals in the organs of herbaceous plants

2021 ◽  
Vol 265 ◽  
pp. 02019
Author(s):  
Antonina Reut ◽  
Aigul Biglova ◽  
Irina Allayarova
Keyword(s):  
Heavy Metals ◽  
Raw Materials ◽  
Arsenic Content ◽  
Quantitative Chemical Analysis ◽  
Nickel Copper ◽  
Lead Magnesium ◽  
The Russian Federation ◽  
Cadmium Lead ◽  
The City

The purpose of the work is to establish the characteristics of the accumulation of heavy metals of aboveground and underground organs in plant samples of 8 varieties of Narcissus hybridus and Camassia cusickii in the urbanized environment of the city of Ufa. The study of the elemental composition of the samples was carried out according to the method of quantitative chemical analysis ‘Determination of As, Pb, Cd, Sn, Cr, Cu, Fe, Mn and Ni in laboratory samples of food products and food raw materials by the atomic absorption method with electrothermal atomization’. It was found that the content of nickel, copper, cadmium, lead, magnesium, iron, chromium in all the samples studied does not exceed the standards specified in the State Pharmacopoeia of the Russian Federation (SP RF). The arsenic content exceeds the standards specified in the SP RF by 3.4 times. Revealed a high intensity of biological absorption of copper. It has been established that the concentrations of As, Cu, Pl, Mn, Fe in the aboveground organs are higher than in the underground part of plants; the ratio of the content of Ni, Cr, Cd in aboveground and underground organs is the same.

scholarly journals Біоіндикаційна оцінка впливу місць видалення відходів на стан навколишнього природного середовища

2018 ◽  
pp. 88-92
Author(s):  
П. В. Писаренко ◽  
М. С. Самойлік ◽  
А. В. Молчанова
Keyword(s):  
Heavy Metals ◽  
Triticum Aestivum ◽  
Toxic Effect ◽  
Contaminated Soil ◽  
Household Waste ◽  
Long Run ◽  
The Impact ◽  
The Given ◽  
The City

У статті проведено оцінку впливу звалища твердих побутових відходів (на прикладі звалища відходів міста Полтави) на біоту через визначення фітотоксичного впливу забрудненого ґрунту на схожість, ріст та кореневу систему рослин Triticum aestivum. Встановлено, що рівні пригніченості ростових процесів у даному ґрунті є вище за середні, що вказує на високий вміст важких металів у даному ґрунті та їх токсичний вплив на біоту у місці розташування звалища. Обґрунтовано, що використання пребіотика «Sviteco-PBG» дає змогу значно покращити якість ґрунту, і вже після 14 днів токсичний вплив на біоту в середньому зменшився на 10 %. Отже, використання пребіотиків дає змогу значно підвищити ефективність очистки ґрунту від важких металів, що в перспективі надає можливість повернути забруднені землі у господарський обіг. The article assesses the impact of landfill of solid household waste (for example, landfill of waste from the city of Poltava) on biota due to the determination of the phytotoxic influence of contaminated soil on the growth, growth and root system of plants Triticum aestivum. It has been established that the level of depression of growth processes in this soil is higher than average, which indicates the high content of heavy metals in the given soil and their toxic effect on the biota at the location of the landfill. It was substantiated that using «Sviteco-PBG» prebiotic can significantly improve the soil quality, and after 14 days the toxic effect on biota has decreased by 10 % on average. Thus, the use of prebiotics can significantly improve the efficiency of soil cleaning from heavy metals, which in the long run provides an opportunity to return the contaminated land to economic circulation.

scholarly journals Concentrations of manganese and iron in some woody and herbs plants

2011 ◽  
pp. 39-49 ◽  
Author(s):  
Dragica Stankovic ◽  
Borivoj Krstic ◽  
Mirjana Sijacic-Nikolic ◽  
Milan Knezevic
Keyword(s):  
Heavy Metals ◽  
Natural Environment ◽  
Atomic Absorption Spectrophotometry ◽  
Multidisciplinary Research ◽  
Flame Atomic Absorption ◽  
Term Basis ◽  
Level Of Significance ◽  
The City

Heavy metals are the substances that indicate environmental pollution. The plants polluted with heavy metals may endanger natural environment and cause health problems in humans. In our multidisciplinary research of the concentrations of pollutants in forest ecosystems and natural environment in Belgrade, we examined the contents of heavy metals essential for plants but harmful in greater concentrations on a long-term basis. The fact that heavy metals manganese and iron are accumulated in plants to the greatest extent focused our work on determination of the level of concentrations of Mn and Fe in the vegetative parts of 8 plant types on three locations on the Avala Mountain and one location in the centre of the city of Belgrade. The analyses of heavy metals contents in plants were performed by the method of flame atomic absorption spectrophotometry. The examination of the existence of important differences between the average values was performed by implementation of Duncan?s test for the level of significance of 95%. The current contents of heavy metals in plants in the area of the protected natural resource Avala do not represent danger that would presently cause notable damage to forests but show the tendency of the increase of concentrations. Therefore, this issue should be constantly monitored.

scholarly journals The content of heavy metals in the raw materials of some representatives of the genus Paeonia L. in an urbanized environment

2021 ◽  
Vol 16 (4) ◽  
pp. 337-352
Author(s):  
Antonina A. Reut ◽  
Svetlana G. Denisova
Keyword(s):  
Heavy Metals ◽  
Raw Materials ◽  
Point Of View ◽  
Raw Material ◽  
Mobile Forms ◽  
Soil Solutions ◽  
Quantitative Indicators ◽  
The City ◽  
Maximum Content

At present, heavy metals are generally recognized as priority soil pollutants, while the most active pollutants are their mobile forms, which can pass from solid phases into soil solutions and be absorbed by plants. It is known that the vegetative mass of agricultural crops is capable of accumulating large amounts of heavy metals. Ornamental flower crops, which firmly occupy their ecological niche, are practically not considered from this point of view. The aim of this work was to study the features of the accumulation of heavy metals in the aboveground and underground organs of some representatives of the genus Paeonia L. in the urbanized environment of the city of Ufa. The objects of research were four species ( P. peregrina Mill., P. lactiflora Pall., P. lactiflora f. rosea, P. delavayi Franch.) (Family Paeoniaceae Rudolphi) and three varieties of hybrid peony (Appassionata, Mustai Karim, Jeanne dArc). The study of the elemental composition of the aboveground and underground parts was carried out according to the method Determination of As, Pb, Cd, Sn, Cr, Cu, Fe, Mn and Ni in samples of food products and food raw materials by the atomic absorption method with electrothermal atomization. Mathematical data processing was carried out using generally accepted methods of variation statistics using the AgCStat software package in the form of an Excel add-in. Eight element studies are presented for each raw material group. Quantitative indicators of elements are given in mmol/kg of air-dry raw materials. It was revealed that in the studied samples the copper content was 4.152520.00 times higher than that of other elements. The minimum concentrations of arsenic (0.00350.0064 mmol/kg), chromium (0.00190.0046 mmol/ kg), manganese (0.01740.0219 mmol/ kg) and iron (0.00590.0125 mmol/ kg) were noted in the roots; lead (0.0030.037 mmol/kg), cadmium (0.00020.001 mmol/kg) and copper (0.14770.2134 mmol/kg) - in the leaves; nickel (0.00820.0179 mmol/kg) - in the flowers of the studied paeonies. The maximum content of arsenic (0.00620.0123 mmol/kg) and chromium (0.00280.0063 mmol/kg) was found in the leaves; lead (0.00270.0223 mmol/kg), nickel (0.01670.0209 mmol/kg), manganese (0.01730.0212 mmol/kg) and iron (0.00870.0138 mmol/kg) - in stems; cadmium (0.00020.0009 mmol/kg) and copper (0.1440.244 mmol/kg) - in flowers. Therefore, cutting paeonies in the autumn before retirement avoids the accumulation of these microelements in the soil. The results of the correlation analysis showed that the absolute values of the concentrations of the studied elements in the considered taxon of paeonies correlate with each other to a moderate and strong degree.

Determination of some heavy metals (Fe, Cu, Zn and Pb) in blood by total reflection X-ray fluorescence

2003 ◽  
Vol 107 ◽  
pp. 203-206 ◽  
Author(s):  
M. Bounakhla ◽  
A. Doukkali ◽  
K. Lalaoui ◽  
H. Aguenaou ◽  
N. Mokhtar ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Total Reflection ◽  
X Ray

Determination of selected heavy metals in tuna fish (Thunnus thynnus)

2013 ◽  
Vol 38 (03) ◽  
Author(s):  
S Mol ◽  
S Karakulak ◽  
S Ulusoy
Keyword(s):  
Heavy Metals ◽  
Thunnus Thynnus ◽  
Tuna Fish
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